I accidently shorted the speed controller for my kids 36v go kart when the neg and pos wire touched each other for the connecters to the motor. Now the go kart won't move. I can still heard the speed controller switching when I shift the forward and reverse shifter. The output voltage for motor/power connect starts out at 36v then kept dropping till it reaches 12v~18v. When I press the gas petal, the voltage doesn't go up. Is my controller toasted or is there away to reset it?